query

SQLServerCentral Article

Optimized Plan Forcing with Query Store in SQL Server 2022

  • Article

In this Article ,  We will delve into the world of Query Store and explore how to use Optimized Plan Forcing to improve performance in SQL Server 2022. We will discuss what it is, how it works, and how it can impact your system's performance.

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2023-09-04

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SQLServerCentral Article

Create an HTML Report on the Status of SQL Server Agent Jobs

  • Article

SQL Server jobs are an integral part of any SQL Server environment. These jobs run a predefined set of tasks and commands at specified intervals, ensuring the database is up-to-date and performing optimally. As a database administrator, it is essential to regularly monitor the status of SQL Server jobs. One way to do this is […]

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2023-05-03

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Technical Article

Query Performance comparison between instances

  • Script

Execute at source, and will generate an output with TSQL commands to create temp tables filled with top 50 long lasting queries from all databases.
Then execute output at destination and will do the same and show comparison of matching queries!!

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2016-12-19 (first published: )

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Question of the Day

STRING_AGG's behavior

Executing the following script (Sql Server 2022), you get the table t0 with 10 rows:
CREATE TABLE t0
( id     INT PRIMARY KEY
, field1 VARCHAR(1000)
, field2 VARCHAR(MAX));
INSERT INTO t0
SELECT
  gs.value
, REPLICATE ('X', 1000)
, REPLICATE ('Y', 1000)
FROM generate_series(1, 10, 1) gs;
GO
What happens if you execute the following statements?
  1. select STRING_AGG(field1, ';') within group (order by id)  from t0;
  2. select STRING_AGG(field2, ';') within group (order by id)  from t0;

See possible answers